Storage-battery plate.



M. KROKAVBTZ.

STORAGE BATTERY PLATE.

APPLIOATIOH mam 12.0, 1014.

1,107,618, Patented Aug. 18, 1914.

WITNESSES 11v VEN TOR ,JflB Mumd/ g1.

W M I ATTORNEY.

THE NORRIS PETERS CO PHOIO-LIYNQ. WASHING FUN. l). C

UNTLE MARTIN KROKAVETZ, OF CLEVELAND, OHIO.

STORAGE-BATTERY PLATE.

Specification of Letters Patent.

Patented A11 18, 1914.

Application filed April 6, 1914. Serial No. 829 842.

To all whom it may concern:

Be it known that I, MARTIN KnoKAvn'rz, citizen of the United States, residing at Cleveland, in the county of Cuyahoga and State of Ohio, have invented certain new and useful Improvements in Storage-Battery Plates, of which the following is a specification.

This invention relates to storage battery plates and has for its object to provide an improved plate which will have the advantages of both the Plant and Faure types, being characterized particularly by ahigher capacity due to "the fact that the plate is provided with chemically deposited active material, formed as in the Plant cells, and also contains troughs or holders in which active material is artificially placed as in the Faure cells.

A further feature of the invention is an increased strength and space for expansion without buckling, and which requires no rubber, wood, paper or other material to hold the active matter in place, and therefore the plate will stand more rough handling than other plates.

A further feature of the invention is the production of pyramidal points or projections on the outside of the troughs or holders, with perforations between the projections, giving a large exposed surface, and also permitting access of the electrolyte to the material in the troughs.

The invention is illustrated in the accompanying drawings in which:-

Figure 1 is a side elevation of the plate. Fig. 2 is a section on the line 22 of Fig. 3. Fig. 3 is a side view of one of the troughs or holders. Fig. 4 is a cross section of one of the troughs.

Referring specifically to the drawings, the plate comprises a frame 6 which is made from antimony-lead alloy. This frame may have as many divisions as desired to receive the holder. Two are shown in Fig. 1. Each division or section of the frame is provided with a plurality of holders or troughs indicated as a whole at 7, and the particular construction of which is important. These holders are made of pure lead, and when the that they can be conveniently welded to the frame.

The bottom of the trough is plain or flat and imperforate as indicated at 10, but the sides thereof are provided with a multiplicity of pyramidal projections or points 12 formed by criss-cross V-shaped grooves 11. in the exterior of said sides, and at each intersection of the grooves a perforation 13 is made, through the side wall, thereby producing a multiplicity of perforations at the corners of said points. This gives the outside of the plates a very large surface for active material, and the perforations enable the electrolyte to have access to the innor active material or paste, as indicated at 14 in Fig. 4.

The outside of each trough is formed as in the Plant system, the active material being deposited chemically by electrical action, said material being indicated at 15 in Fig. 4, and this active material covers or is deposited between the projections or points and also fills up the small perforations 13 in the side or walls, thus acting as a screen or protector for the inner active material 14 of the Faure type. After the outside of the trough or holder is thus formed, the inside of the trough is filled with the paste or active material, and after this is done the troughs are assembled or placed in the frame as above described.

A plate so constructed will have the advantages referred. to above, and the invention is not limited to the exact embodiment shown but is capable of variations within the scope thereof.

WVhat I claim as new is A battery plate having a plurality of trough shaped holders therein, active material within each holder, the exterior of the In testimony whereof, I doaflix my sigsides of the holder having numerous long nature in presence of two witnesses. grooves and pyramidal projections between MARTIN KROKAVETZ. the grooves, and perforations at the inter- Witnesses:

sections of the grooves, and active material JOHN A. BOMMHARDT,

on the exterior of said sides. EDWARD J. HOBDAY.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents. waahingtom, JD, G, 

